Machine for sawing hoops from poles



(No Model.)

RA WILLI-AMS.

MACHINE .POR SAWING HUO'PS .PROM POLBS. Nd. 271,672. Patented Feb. 6,1883.

NA Puma mvmhagnpner. wniningmn, D4 C.

UNTTED STATES PATENT OFFICE,

HIMSELF AND WILLIAM BOWKER,

OF SOMERV ILLE, MASSACHUSETTS.

iVlCHlNEFOR SAWING HOOPS FROM POLES.

SPECIFICATION forming part of Letters Patent No. 271,672, dated February 6, 1883,

Application filed November 10. 1882. (No model.)

To all whom it may concern:

Be it known that l, ROBERT WILLIAMS, of Boston, in the county of Suffolk, of the State of Massachusetts, have invented a new and useful Improvement in Machines for Sawing Hoops from Poles; and I do hereby declare the same to be described in the following specification and represented in the accompanying drawings, of which- Figure l is a front elevation, and Fig. 2 an end View, of mechanism embodying my invention, the nature of which is detined in the claims hereinafter presented.

In this mechanism an endless band-saw is used, it being shown at A as supported by two wheels, B and O, on and about which it is arrangel, as represented. The lower of these wheels is fixed upon a shaft, D, supported by a frame, K, and provided with a driving-pulley, E.

Pivoted on the shaft is a vibratory arm, F, having adapted to it, so as to be capable of being` moved lengthwise on or init, a slidebar, G.

To the upper part ot' the bar G the sawsupporting wheel is pivoted. Lugs a b, projecting from the arm F and bar G, as represented, have screwed through thema rod, H, provided with screw-threads c c. On revolving the rod the bnr G may be moved upward or downward, as occasion may require, to regulate the tension of the saw.

From the arm F another arm, I, projects at right angles to such arm F, it being fnrcated, as represented. The arm I sustains the mechanism for guiding the Ahoop-pole to the saw,

As a hoop usually varies in diameter, or is more or less irregular in transverse section l from one end to the other otit, it will be seen that while it may be passing between the rollersf and the rollers d e it, as it may enlarge, will'force the arm I and its arm F backward, so as to cause the saw to he correspondingly moved, a spring, S, supported by the frame K and bearing against .the ai in F, serving to move the arm in the opposite direction as the hoop-pole may diminish in diameter. By such means it will be seen that the thickness ot the hoop severed from the pole will be preserved equal, or substantially so, throughout such hoop, however the pole may vary in section or diameter.

The arm F and its slide G may be said to constitute an arm or vibrator to swing like a pendulum, andtheret'ore it may be termed the pendulous arm. It maybe pivoted at its upper instead of at its lower part, in which case the wheel O would be the driving-wheel ot' the saw. Furthermore, in the place ot' the xed bearing or roller f, another band-saw and its supporting and hoopguide mechanism, as mentioned, may be employed to cut another The said mechanism shown at L is substantially like such as is descrioed and claimed in the specilication ot' another application for apatent tiled hy me and William Bowker at `tl|e time of filing the application of which this specification constitutes a part.

I claim- 1. The combination ot' the fixed hoop bearing or rollerf, substantially as specileaL/with one ofthe band-saw wheels B C and the hoopguide mechanism L and its sustaining-arm I, supported, as set forth, by a pendulous arm, F G, so as to enable the saw and such hoopguide mechanism to vibrate bodily, as and for the purpose explained.

' 2. The combination ofthe spring S and the liXed hoop bearing or rollerf, substantially as specified, with one ofthe band-saw Wheels B O and the hoop-guide mechanism L and its sustaining-arm I, supported, as set forth, by a and such hoop-guide mechanism to vibrate bodily, as and for the purpose explained.

hoop from the opposite part of the hoop-pole.

pendulous arm, F G, so as to enable the sawv 3. The combination of the vibratory arm F hoopguide mechanism L,snpporbed bya pendand slide G and their adjusting mechanismnlous arm, F G, so :is to enable the sow and [o viz., the screw H and lugs a, b, as describedsuch hoop-guide mechanism to vibrate bodily, with the band-saw and its two supportingas and for the purpose set forth.

whee1s,such arm being pivoted to the driving- ROBERT VILLIAMS. shaft of such saw, and all being substantially Witnesses:

and to operate as set: forth. R. H. EDDY,

4. One of the band-saw Wheels B G and the E. B. PRATT. 

